Home / 11,639.87-17,454.68-3,318

Finding the Fourth Proportional to 11,639.87, 17,454.68 and 3,318

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Solution

The fourth proportional to 11,639.87, 17,454.68 and 3,318 is: 4,975.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.87 : 17,454.68 = 3,318 : x
  2. Step 2: Convert to fraction form
    11,639.87/17,454.68 = 3,318/x
  3. Step 3: Cross multiply
    11,639.87x = 17,454.68 × 3,318
  4. Step 4: Simplify right side
    11,639.87x = 57,914,628.24
  5. Step 5: Solve for x
    x = 57,914,628.24/11,639.87
  6. Step 6: Final answer
    x = 4,975.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.